Guidelines for choosing a scanning resolution for a web image
- If you want your image to appear on the web at about the same size as the original print, then choose a resolution of 72 ppi (pixels per inch).
- If you want your image to be magnified, then choose a higher resolution. For example, setting a resolution of 144 ppi will effectively double the size of the image.
- Generally, it is better to scan at a high resolution and then downsize the resulting image to an appropriate size. The added detail in the scanned image will allow it to be cropped, color corrected or otherwise manipulated in Photoshop before sizing the final picture appropriately for the web.
Where to scan
- There is a scanner in the Humanities Computing Lab (Main Hall 108) and two scanners in the Lawrence Library: one by the audio CD's on the main floor, and one in the Information Technology Center Lab on the second floor. To scan your image, follow the directions beside the scanner. The reference librarian on duty can assist you with the scanner on the main floor.
- Humanities Lab EPSON scanner interface
To Crop an Image
- Open the image in Photoshop
- Select the Crop tool (shown at right)
- Draw a selection around the part of the image that you want to keep
- To define the edge, click and drag the little squares on the selection box
- Hit the enter or return key to crop the image
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To Resize an Image
- Open the image in Photoshop
- Select Image >> Resize >> Image Size
- Make sure that Resample Image is checked
- Reduce the number of pixels in the height or width box
To Add Additional Padding (white border) Around an Image
- First resize the image (see above)
- Select Image >> Resize >> Canvas Size
- Add pixels to the side of the image as shown in the image
- For more detailed information, refer to this PDF: Photoshopping Images
To Save an Image for Use in LiveText
- Select File >> Save As: use the JPEG format with a quality of 8 or less. Images should be less than <300 Kb in size
- Click OK
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